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Re: st: variable name


From   MAY BAYDOUN <mbaydoun2002@yahoo.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: variable name
Date   Mon, 4 May 2009 09:18:02 -0700 (PDT)

Hello!

I think you need to multiply the original variables first and then place an i. next to that new variable.

gen Irs1234567_1Xrs7654321=rs1234567*rs7654321

xi: logit case sex i.Irs1234567_1Xrs7654321, or


Hope this helps,

May


--- On Mon, 5/4/09, Qiang (Danny) Chen <qiangchen@mail.nih.gov> wrote:

> From: Qiang (Danny) Chen <qiangchen@mail.nih.gov>
> Subject: st: variable name
> To: statalist@hsphsun2.harvard.edu
> Date: Monday, May 4, 2009, 11:39 AM
> Dear Stata users:
> 
> I have a simple question here. When I use xi (Interaction
> expansion), I got the following report. I am wondering if
> there is a way to keep the original snp names. For example:
> 
> _Irs1Xrs~1_1  ==> _Irs1234567_1Xrs7654321_1
> 
> 
> Thanks! 
> 
> xi: logit case sex i.rs1234567*i.rs7654321, or
> 
> ------------------------------------------------------------------------------
>         case | Odds
> Ratio   Std. Err.      z 
>   P>|z|     [95% Conf.
> Interval]
> -------------+----------------------------------------------------------------
>          sex
> |   .2390816   .0457164 
>   -7.48   0.000 
>    .1643547    .3477845
> _Irs123456~1
> |   .2017002   .2995979 
>   -1.08   0.281     
> .010974    3.707226
> _Irs123456~2
> |   .1621226   .2412076 
>   -1.22   0.221 
>    .0087784    2.994125
> _Irs765432~1
> |   .6244084   .9455679 
>   -0.31   0.756 
>    .0320966    12.14728
> _Irs765432~2
> |   .2035963   .3072363 
>   -1.05   0.292 
>    .0105747    3.919879
> _Irs1Xrs~1_1
> |   2.363021   3.757366 
>    0.54   0.589 
>    .1047126    53.32569
> _Irs1Xrs~1_2
> |   7.389233   11.69742 
>    1.26   0.206 
>    .3319834    164.4683
> _Irs1Xrs~2_1
> |   2.471199   3.926579 
>    0.57   0.569 
>    .1097495    55.64331
> _Irs1Xrs~2_2 |   
> 6.57177   10.37793 
>    1.19   0.233 
>    .2975032    145.1687
> ------------------------------------------------------------------------------
> 
> Qiang (Danny) Chen, Ph.D.
> NIMH, NIH
> 
> 
> 
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